Qiang Huo 羌活 (Notopterygium Root) — Chinese Herbal Medicine

At a Glance

• Herb: Qiang Huo
• Chinese name: 羌活 (Qiāng Huó)
• Latin name: Rhizoma et Radix Notopterygii (Notopterygium incisum Ting ex H.T.Chang)
• Nature: Warm
• Taste: Acrid / Bitter
• Meridian: Bladder / Kidney
• Category: Herbs that Release the Exterior — Warm Acrid (辛温解表药)
• Introduction: Qiang Huo (羌活, Notopterygium rhizome) is the premier herb for dispersing wind-cold-damp from the upper body and Taiyang channel. Its strong ascending, dispersing nature makes it particularly effective for headache (especially occipital and neck), neck and shoulder stiffness, and upper limb bi syndrome from wind-cold-damp. Paired with Du Huo (which treats the lower body), together they cover the full body in wind-damp bi formulas. Its intensely aromatic, warm nature dries dampness powerfully but is too drying for prolonged use.

Action

• Releases the exterior and disperses wind-cold (解表散寒)
• Dispels wind-damp and relieves bi pain (祛风湿，止痹痛)
• Unblocks the Taiyang channel and relieves headache (通太阳经，止头痛)
• Guides to the upper body and neck (引药上行)

Clinical Application

• Wind-cold exterior with dampness: severe chills, fever, headache, heavy body and limbs, neck and shoulder stiffness — stronger than Fang Feng
• Occipital headache and neck pain: pain at the back of the head and neck from wind-cold — the premier herb for Taiyang channel headache
• Upper body wind-cold-damp bi: shoulder, arm, neck, and upper back pain from wind-cold-damp obstruction
• Cold-damp pain: joint pain worse in cold and damp weather

Precautions

• Avoid in blood deficiency — intensely drying nature consumes blood and yin
• Avoid in yin deficiency with heat — warming drying nature worsens deficiency heat
• Use only short-term for acute exterior conditions; not for chronic use
• Avoid large doses — may cause nausea and vomiting
• Use cautiously in patients with gastric sensitivity

Formula

• Qiang Huo Sheng Shi Tang (羌活胜湿汤): Qiang Huo, Du Huo, Fang Feng + others — wind-damp headache and body heaviness
• Jing Fang Bai Du San (荆防败毒散): Qiang Huo + Jing Jie, Fang Feng + others — wind-cold exterior
• Du Huo Ji Sheng Wan (独活寄生丸): Du Huo, Qiang Huo + joint herbs — chronic bi
• Juan Bi Tang (蠲痹汤): Qiang Huo + wind-damp herbs — bi syndrome
• Chuan Xiong Cha Tiao San (川芎茶调散): adds Qiang Huo for occipital headache

Combinations

• [Discourse on Spleen and Stomach — Pí Wèi Lùn (脾胃论), Li Dongyuan, 1249] Qiang Huo + Du Huo + Fang Feng + Gao Ben + Chuan Xiong + Man Jing Zi + Zhi Gan Cao: Qiang Huo Sheng Shi Tang (羌活胜湿汤) — for wind-damp in the exterior channels causing headache, neck stiffness, and heavy aching body
• [Formulary of the Bureau of People’s Welfare Pharmacies — Tài Píng Huì Mín Hé Jì Jú Fāng (太平惠民和剂局方), Song Imperial Medical Bureau, 1107] Qiang Huo + Du Huo + Chai Hu + Qian Hu + Zhi Ke + Fu Ling + Jie Geng + Chuan Xiong + Fang Feng + Gan Cao + Sheng Jiang + Bo He: Ren Shen Bai Du San (人参败毒散) / Jing Fang Bai Du San — for wind-cold-damp exterior with body aches, headache, and stiff neck
• [Classified Materia Medica — Lèi Jīng (类经), Zhang Jiebin, 1624] Qiang Huo + Du Huo + Fang Feng + Qin Jiao + Du Zhong + Sang Ji Sheng + Niu Xi + Dang Gui + Chuan Xiong: Juan Bi Tang (蠲痹汤) variation — for wind-cold-damp bi syndrome affecting joints
• [Compendium of Materia Medica — Běn Cǎo Gāng Mù (本草纲目), Li Shizhen, 1596] Qiang Huo + Bai Zhi: for frontal and occipital headache from wind-cold

Pharmacological Effects

• coumarins
  • Anti-inflammatory: inhibit NF-κB, COX-2, and PGE2 synthesis
• notopterol
  • Analgesic: raises pain threshold
  • Analgesic: reduces neurogenic pain
• Antipyretic
  • reduces fever via hypothalamic mechanisms
• Antimicrobial
  • volatile oils active against bacteria and fungi
• vasodilatory
  • Cardiovascular: improves microcirculation
• Antiplatelet
  • inhibits platelet aggregation
• polysaccharides
  • Immunomodulatory: modulate immune response

Classic Description

• [Shen Nong’s Classic of Materia Medica — Shén Nóng Běn Cǎo Jīng (神农本草经), ~100 BCE] (listed under Qiang Qing 羌青) “Qiang Huo is acrid and warm. It disperses wind-cold, relieves headache, and treats bi syndrome with pain.” (羌活，辛苦温。散风寒湿，止头身疼痛，治风寒湿痹。)
• [Discourse on Spleen and Stomach — Pí Wèi Lùn (脾胃论), Li Dongyuan, 1249] “Qiang Huo is the sovereign herb for the Taiyang channel and the upper body. For wind-damp headache at the occiput and neck stiffness, it is unsurpassed. But its fierce drying nature consumes blood — do not use long-term or in blood deficiency.” (羌活为太阳经及上部之君药。风湿头痛，项强，无出其右。然其燥烈耗血，血虚及久用忌之。)
• [Compendium of Materia Medica — Běn Cǎo Gāng Mù (本草纲目), Li Shizhen, 1596] “Qiang Huo treats the upper body; Du Huo treats the lower body. Together they cover wind-damp bi from head to toe. Separate them by location — upper uses Qiang Huo; lower uses Du Huo; whole body uses both.”